Sheet carrying and adjusting device for paper-folding



(No Model.) 2 Sheets-Sheet 1.

I T.G'.'DEXTER,

SHEET CARRYING AND ADJUSTING DEVICE FOR PAPER FOLDING MACHINE-S.

No. 287,421. Patented Oct. 30, 1883.

(No Model.) 2 sneets-Sheet 2 A I. O: DEXTER. SHEET CARRYING 'AND ADJUSTING DEVICE FOR PAPER FOLDING MACHINES.

Patented 0013. 30, 1883,

tlNirnn FFIQE.

- TALBOT G. DEXTER, OF DES MOINES, IOWA.

SHEET CARRYING AND ADJUSTING DEVICE FOR PAPER-FOLDING MACHINES.

SPECIFICATION forming part of Letters Patent No. 287,421, dated October 80, 1883, Application filed November 4, 1882. (No model.)

To all whom it may concern:

I Be it known that I, TALBOT G. DEXTER, of Des Moines, in the county of Polk and State of Iowa, have invented a Sheet Carrying and Adj usting Device for Paper-Foldin g Machines, of which the following is a specification.

The object of my invention is to overcome the diflieulty in placing a large thin piece of paper in proper position relative to a pair of folding-rollers as required to double a sheet in its center and fold it squarely. Heret'ofore adjustable and reciprocating guides have been combined with a receiving-table and fly-board of a printing press to push and straighten sheets relative to each other as they were delivered in succession from a press; but a large sheet, especially when moist, cannot be pushed by lateral pressure against its edges.

My invention consists in forming, arranging, and combining auxiliary, adjustable, and reciprocating plates or tables with a receivingtable, a series of adjustable standards or stops, a pair of folding-rollers, and operative mechanism, as'hereiuafter fully set forth, in such a manner that sheets will be automatically carried by the reciprocating tables, and thereby adjusted relative to the folding-rollers, so that the folding-blade will double each sheet exactly in its center to produce square and uniform folds.

Figure l of my accompanying drawings is a top View of a folding-machine having my sheet carrying and adjusting mechanism attached. Fig. 2 is a side View showing the operative mechanism. Fig. 3 is a detail View and transverse section of the complete device. Fig. 4 is an enlarged side view, Fig. 5 a top view, and Fig. 6 a transverse View, of a section of my machine. Jointly considered these figures clearly illustrate the construction and operation of my complete invention.

A is the top surface of a folding-machine.

vB is a transverse opening, through which sheets of paper are passed downward to a pair of folding-rollers, 1 and 2, that extend parallel 3 with the opening B.

' sheet-carriers.

.gage a sheet of paper and to aid 0 O are my auxiliary receiving-tables and They are preferably made of light sheet metal, and bent upward at their rear edges to produce backs 0, adapted to enin adjusting and squaring it relative to the complete machine.

d d are shaft-bearings fixed to the top of the machine at an angle of about forty-five degrees relative to the edge of the top surface, A, as

ends are hinged, or in any suitable way, so

that the rectilinear motion of the shaft f will be thereby transmitted to the shafts d.

h is an arm pivoted to the frame and flexibly connected at its top end with the shaft f. Its lower end engages a rotating cam, i, in such a manner that it will be vibrated thereby as required, to imparta rectilinear motion to the shaft f.

. K K are coiled springs placed between collars on the shaft f in such a manner that they will engage the shaft-bearings f, and exert their force to move the shaft in an opposite direction from that in which it is moved by means of the arm h and rotating cam 13. 1

In the practical operation of my invention, when a sheet is placed upon the auxiliary reeeiving-tables C by means of the fly of a printing-press, or in any other way, and motion imparted to the folding mechanism, the reciprocating shaft f (actuated by means of the rotating cam t and arm 71) willbe automatically operated, and power and motion transferred therefrom by means of the links 9 to the shafts d, to thereby move the plates or ta'bles 0 diagonally relative to the square top of the machine and the folding-rollers 1 and 2, that extend parallel with the opening B, and to carry the sheet in the same direction until its edges come in contact witha series of standards or stops, m, that have horizontal branches to extend under the sheets, and are adjustably connected with the top A, as required to automatically adjust and square the sheets relative to the folding-rollers, so that a folding-blade operated in concert with the rollers will double the sheets in their centers, as required, to produ ce straight folios and squarely-folded papers.

I claim as my invention- 1. In a paper-folding machine, the combination of a movable auxiliary receiving table or plate with the stationary top surface of the machine, having stops or gages attached, and a pair of folding-rollers to carry and adjust sheets of paper relative to the rollers and complete machine, for the purposes specified.

2. The combination of the auxiliary receiving-tables and sheet-carriers O C, the fixed shaft-bearers (Z, the shafts d, the shaft f, and

links 9, substantially as shown and described, to operate in the manner set forth, for the purposes specified.

3. The sheet carrying and adjusting device for paper-folding machines, composed of the movable plates C O, fixed shaft-bearings d, reciprocating shafls d and f, adjustable links 9, and operating mechanism h '13 K, substantially as shown and described.

TALBOT O. DEXTER.

\Vitnesses:

P. L. COOK, V H. W. BROWN. 

